/*-+-*****************************************************************************
 Copyright (C) 2009-2012 Oceanside Software Corporation (R)
 Dallas, Texas

 Author       : Jason T. Brower
 Purpose      : This file is part of a point-of-sale software package
                originally written for Table-Service Restaurants.
              
 Date         : July 8th of 2012
              
 History      : The application that this software file belongs to was 
                written over a 3-Year period.  The first version was written
                in C# .Net 3.5 using Windows Forms.  Being new to .Net at
                the time, I soon learned of Windows Presentation Foundation,
                liked the graphics capabilities and databinding so I
                migrated to WPF.  When the .Net 4.0 framework was released
                the application was migrated from 3.5 to 4.0. Now today,
                .Net 4.5 RC is out and I was already in process of migrating
                before I made this public.
                
Excuse Me     : Please excuse the coding style, it is not representative of
                my typical work.  During the three years I was under a very
                tight budget, constantly running out of funding and was 
                working 18 hour days hyped up on 5-Hour Energy.  The 
                design is not textbook.  It is monolythic because of
                previous issues I will not get into.  There are few comments
                in the code and the ones that are there may be incorrect.
                
What it is not: This is not the exact version that I took through PA-DSS 2.0
                nor is it the exact version running at my customer sites.
                I removed some details for security purposes including some
                encryption algorithms.  The reporting was removed because
                I was including a third party library that cannot be 
                published with this Open Source.
                
What it is    : This application has been running at high volume restaraunts
                for over a year.  It never freezes, crashes or does anything
                unexpected.  So long as it is built, installed and configured
                correctly, it is a strong system that we can all enhance.

Contact       : Please note that I can no longer work for free.  However, you
                can reach me at information@oceansidesw.com.                                                      

*********************************************************************************/
using System;
using System.Windows.Input;
#if _LOCALDB
  using Oceanside.LocalDB;
#else
using Oceanside.RemoteDB;
#endif
namespace Oceanside
{
    public static class ScreenSaverDelegates
    {
        // TickCount cycles between Int32.MinValue, which is a negative 
        // number, and Int32.MaxValue once every 49.8 days. This sample
        // removes the sign bit to yield a nonnegative number that cycles 
        // between zero and Int32.MaxValue once every 24.9 days.
        private static int lastMouseTick = Environment.TickCount;
        public static int LastMouseTick
        {
            get
            {
                return lastMouseTick;
            }
            set
            {
                lastMouseTick = value;
            }
        }

        public static void UpdateScreenTimeout()
        {
            lastMouseTick = Environment.TickCount;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public static bool ScreenTimeout()
        {
            return (Environment.TickCount - ScreenSaverDelegates.LastMouseTick) > Constants.ScreenSaverTimeout_MS;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void PreNotifyInput_NOTHROW(object sender, NotifyInputEventArgs e)
        {
            try
            {
                if (e.StagingItem.Input.RoutedEvent == Mouse.MouseDownEvent)
                {
                    lastMouseTick = Environment.TickCount;
                    CheckScreenSaverNeedsExit();
                }
            }
            catch (Exception ex)
            {
                Constants.ErrorDispatcher.Notify(Error.EType.E_GEN_PRENOTIFY_INPUT, ex);
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public static void CheckScreenSaverNeedsExit()
        {
            if (PosWindow.ActiveWindowInstance is ScreenSaver)
            {
                Oceanside.LoginWindow.Show();
                ScreenSaver.KillAnimation();
            }
        }


        /// <summary>
        /// 
        /// </summary>
        public static void CheckScreenSaverActivate()
        {
#if !_DEBUG
            ///See if we have a screen saver timeout.
            if (ScreenSaverDelegates.ScreenTimeout() && !(PosWindow.ActiveWindowInstance is ScreenSaver))
            {
                if (Constants.ForceOrderOnScreenSaverTimeout)
                {
                    if (PosWindow.ActiveWindowInstance is OrderWindow || PosWindow.ActiveWindowInstance is QuickOrderWindow)
                    {
                        if (!POBindings.IsPendingAction(false))
                        {
                            POBindings.SubmitOrderClicked();
                        }
                    }
                }

                if (App.ApplicationIsRunningFull)
                {
                    if (SHIFT.GlobalContext != null)
                    {
                        SHIFT.GlobalContext.SaveChanges();
                    }
                }

                PosWindow.WindowBeforeLock = PosWindow.ActiveWindowInstance;

                ///Switch to the screen saver.
                ScreenSaver.Show();

                ///Animate the screen saver.
                ScreenSaver.Animate();
            }
#endif
        }
    }
}
